NPI registry status
Active
2026 NPPES data Epilepsy Physician NPI 1144804857
Verify on CMS → Maria Grimberg
Epilepsy Physician in Omaha, Nebraska.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 391 in Epilepsy Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
159
Medicare Part D claims · 30 beneficiaries · Epilepsy Physician avg: 949
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Maria Grimberg filed 159 Medicare Part D claims in 2024 as an Epilepsy Physician in Omaha, Nebraska, prescribing 91% generic.
- 159
- Part D claims, 2024
- 91%
- generic prescribing
- ≥34th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Maria Grimberg
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1144804857), first enumerated 05/09/2021.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 159 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1144804857 · Epilepsy Physician
NPI-10 · ENUM-RECENT · TAX-TRACE · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1144804857
- ENUM-RECENT 2021
- TAX-TRACE 391
- RX-LIGHT 159
- BOOK-THIN 3 in Nebraska
- PHOTO-ENUM Vanessa Lee, MD · 2021
Maria Grimberg's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
159 ≥ 34th percentile 34% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Maria Grimberg practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Maria Grimberg?
Quality data not reportedPrimary specialty
Epilepsy Physician
Medicare Part D claims
159 83% vs specialty avg
Specialty distribution in Nebraska
How Epilepsy Physician compares to other specialties among Nebraska providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Epilepsy Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1144804857 |
|---|---|
| Specialty | Epilepsy Physician |
| Gender | Female |
| NPI Issued | 05/09/2021 |
Brand vs generic prescribing mix · Generic-heavy
Maria Grimberg - brand share 9.0%
Epilepsy Physician average
9% brand-name claims vs 91% generic, on 159 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
159
Total Claims
$24K
Total Drug Cost
30
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 219.867
- Total Day Supply
- 6,404
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $19K
- Generic Drug Cost
- $6K
Patient Demographics
- Average Patient Age
- 69.3 years
- Avg HCC Risk Score
- 1.47
- Gender Split
- 47% female / 53% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Maria Grimberg prescribes most
Top Medicare Part D drugs by claim count, 2024
- Lamotrigine
Lamotrigine
28 claims
- Levetiracetam
Levetiracetam
22 claims
- Primidone
Primidone
15 claims
- Donepezil Hcl
Donepezil Hcl
14 claims
- Carbidopa-Levodopa 11
Carbidopa-Levodopa
11 claims
| Drug | Claims |
|---|---|
| Lamotrigine | 28 |
| Levetiracetam | 22 |
| Primidone | 15 |
| Donepezil Hcl | 14 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Epilepsy Physician Overview
How Maria Grimberg fits within the Epilepsy Physician landscape nationally.
391
Epilepsy Physician Providers in US
44
States with Epilepsy Physician
949
Avg Claims per Provider
Maria Grimberg's 159 claims are below the specialty average of 949.
Nationwide Epilepsy Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Grimberg, both outside Nebraska so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2021)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Epilepsy Physician Providers in Nebraska
Other clinicians with the same primary specialty enrolled in Nebraska, drawn from the same CMS NPPES roster as Grimberg.
One of 3 Epilepsy Physician providers enrolled in Nebraska, 2 are shown here.
Compare Epilepsy Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Maria Grimberg's specialty? ▼
Maria Grimberg specializes in Epilepsy Physician and practices in Omaha, Nebraska.
How much does Maria Grimberg prescribe under Medicare Part D? ▼
In 2024, Maria Grimberg wrote 159 Medicare Part D claims totaling $24K in drug costs for 30 beneficiaries.
Where is Maria Grimberg located? ▼
Maria Grimberg is located at 988102 NEBRASKA MEDICAL CTR, Omaha, NE, 68198. Phone: (402) 552-6605.
What is Maria Grimberg's NPI number? ▼
Maria Grimberg's National Provider Identifier (NPI) is 1144804857, issued on 05/09/2021.
Does Maria Grimberg prescribe more brand-name or generic drugs? ▼
Maria Grimberg's prescribing is 9% brand-name and 91% generic drugs by claim count, with $19K in brand drug costs.
How many Epilepsy Physician providers are there in the US? ▼
There are 391 Epilepsy Physician providers across 44 states in the US. The average Epilepsy Physician provider writes 949 Medicare Part D claims per year.
What drugs does Maria Grimberg prescribe most often? ▼
Based on 2024 Medicare Part D data, Maria Grimberg's most frequently prescribed drugs include Lamotrigine, Levetiracetam, Primidone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Maria Grimberg accept Medicare? ▼
Maria Grimberg appears in CMS Medicare data with 159 Part D claims and 30 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Maria Grimberg's credentials? ▼
Maria Grimberg's NPI is 1144804857. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.